How do I know if my cat has ear mites?
Dark coffee-ground debris in the ear plus relentless scratching and head shaking is the classic ear-mite picture.
Ear mites are tiny parasites that live on the surface of the ear canal, feeding on skin debris and triggering intense itch. The tell-tale sign is a dry, dark, crumbly discharge that looks like coffee grounds, paired with scratching at the ears, head shaking, and sometimes scabs behind the ears from the claws. Kittens and cats with outdoor contact carry them most often, and mites pass easily between animals in the same home.
Why the diagnosis should not be homemade
Yeast and bacterial ear infections, allergies, and polyps can produce discharge and scratching that look nearly identical from the outside, and the wrong drops can make the real problem worse. A veterinarian can spot mites quickly with an otoscope or a microscope slide of the debris, then match the treatment — modern single-application parasiticides have replaced the old weeks of daily drops in many cases.
Because mites travel between animals, every dog and cat in the household usually needs treating at the same time, or the parasite simply circulates back. Itch intensity differs between individuals — some cats scratch themselves raw while housemates barely blink — so a quiet companion animal can still be carrying mites and deserves the same check.
MediIndex articles are for general information only and are not medical advice, diagnosis, or advertising. Outcomes vary by individual — consult a board-certified specialist for personal decisions.